package com.zh.fileupload.util;

import java.util.UUID;

public class UUIDUtils {
    public static String getUUID() {
        return UUID.randomUUID().toString().replace("-", "");
    }

    public static Integer getUUIDInOrderId() {
        int orderId = UUID.randomUUID().toString().hashCode();
        orderId = orderId < 0 ? -orderId : orderId; //String.hashCode() 值会为空
        return orderId;
    }

    public static void main(String[] args) {
        for (int i = 0; i < 100; i++) {
            System.out.println(UUIDUtils.getUUIDInOrderId());
        }
    }
}